For Common Core, a new challenge — from the left

Conventional wisdom held that liberals and teachers supported the new Common Core curriculum standards.

Until the Badass Teachers Association crashed the party.

The 25,000 BATs, as they call themselves, are pushing back against the national standards with Twitter strikes, town hall meetings and snarky Internet memes. They have no qualms with the theory behind the new benchmarks, but they fear the larger movement places too much emphasis on testing and will stifle creativity in the classroom.